body {
    margin: 0;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.428571429;
    color: #333333;
    background-color: #ffffff;
}

.my-container{
    margin-right: auto;
    margin-left: auto;
}

.foot{
    background-color: darkgray;
}
div#content-top{
    text-align: center;
    height: 70%;
    float: top;
}
div#mydiv{
    font-size: 20px;
}
div#content-top{
    font-size: x-large;
    text-align: center;
}
div#content-left{
    display: table;
    width: 35%;
    height: 65vh;
    vertical-align: middle;
    float: left;
}
div#content-right{
    width: 65%;
    height: 65vh;
    float: left;
    overflow: auto;
}
div#cell{
    display: table-cell;
    vertical-align: middle;
    text-align: center;
}
table#exception{
    font-size: 20px;
    word-break: break-all;
    height: 55vh;
}
button#mybutton{
    position: relative;
    right: 20px;
    bottom: -20px;
}
button#button1{
    margin-bottom: 30px;
}
button#button2{
    margin-bottom: 30px;
}
button#button3{
    margin-top: 30px;
}